Factor x^2 + -9x + 20

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To factor x^2 - 9x + 20, we need to find two numbers that multiply to 20 and add up to -9.

The numbers that satisfy this condition are -4 and -5, as -4 * -5 = 20 and -4 + -5 = -9.

Therefore, we can factor x^2 - 9x + 20 as (x - 4)(x - 5).

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